Car-door lock.



P. J. QUINN & G. P. ULIPFORD.

GAR 0011 LOGK. APPLICATION FILED JULY 8, 1909.

Patented May 10, 1910.

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CAR DOOR LOCK. APPLICATION FILED JULY 8, 1909.

Patented May 10, 1910.

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PATRICK J. QUINN AND GEORGE 1?. CLIFFORD, OF BUFFALO, NEW YORK, ASSIGNOBS OF ONE-THIRD TO DANIEL A. DBISOOLL, OF BUFFALO, NEW YORK.

GAR-DOOR LOOK.

T all whom it may concern:

Be it known that we PATRICK J. QUINN and GEORGE P. CLIFFORD, citizens of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented a new and useful Improvement in Car-Door Locks, of which the following is a specification.

This invention relates to locks intended more particularly for use on freight car doors and other sliding doors.

One object of the invention is to produce a practical and desirable hasp lock of simple and strong construction such that a special tool is required to unlock or release the hasp.

Other objects of the invention are to construct the look so that it cannot be pried open by a tool or implement inserted behind the hasp or locking pin, and so that the sagging or displacement of the door from its intended position from any cause will not prevent the look from being readily operated to lock and unlock the door.

In the accompanying drawings, consisting of two sheets: Figure 1 is a perspective view of a car door lock embodying the invention. Fig. 2 is a sectional elevation, on a reduced scale, of the lock and the tool for operating the same. Fig. 3 is a similar view showing the lock bolt held in the released position by the tool. Fig. l is a sec tional plan view of the lock in line t-4-, Fig. 5. Fig. 5 is a sectional elevation thereof in line 5-5, Fig. at. Figs. 6 and 7 are fragmentary sectional elevations thereof in line 66, Fig. 4, respectively, showing the bolt in locked and released positions. Fig. 8 is a fragmentary horizontal section thereof in line 88, Fig. 5.

Like reference characters refer to like parts in the several figures.

A represents a sliding freight car door, or other door, a the door post and the door stop.

B represents a ha sp which is secured to the door by a staple C or other suitable strong fastening device which allows the hasp to swing freely, and D represents a bolt which projects outwardly from the door post and is adapted to extend through the usual opening 0 in the free end of the hasp. The bolt is provided in its outer portion with a vertical hole (Z in which a vertical locking pin E is adapted to be inserted in front of the Specification of Letters Patent.

Application fi1ed Ju1y 8, 1909.

Patented May 10, 1910.

Serial No. 506,490.

hasp to secure the latter. The bolt is movable endwise in a hole passing through the door post and stop and is normally held inward with the front end of its pin hole cl extending into a notch e in the front edge of the locking pin, by a suitable spring F acting on the inner end of the bolt. The spring F is preferably a strong coil spring surrounding the bolt in a barrel 7 which is located in a cavity in the door post. An adjusting nut f is screwed on the threaded inner end of the bolt for adjusting the tension of the spring as may be necessary. The locking pin can only be removed from the pin opening (Z of the bolt D to release the hasp by first drawing the bolt D forwardly against the force of the spring F to disen gage the bolt from the notch in the locking pin. The spring is so strong that the bolt 1) cannot be thus pulled out except by means of a tool or device affording the necessary leverage, and the outer end of the bolt is so shaped that a specially designed tool hereinafter described, must be used to operate it. The locking pin is confined and adapted to slide vertically between guide lugs 9 projecting outwardly from a face plate G consisting of two sections which are preferably bolted through the door stop and postabove and below the bolt D. The adjacent. ends 7' of these face plates are preferably offset inwardly (see Fig. 5) and form a recess in which the free end of the hasp seats and is held from vertical play. The locking pin is preferably provided at its lower end with a hole It in which a pad-lock can be secured to prevent the removal of the locking pin without first unlocking and removing the padlock, and holes 2' are also preferably provided in the locking pin above and below the bolt D for the passage of the wire of the usual car seal.

The tool for pulling the bolt D outwardly in locking and unlocking the door is shown in Figs. 2 and 3. It preferably consists of a lever or handle K, a fulcrum bar is pivoted to the lever and a coupling is that is also pivoted to the lever and has a jaw adapted to grasp the bolt D, which latter has a lip 10 at its outer end to afford a hold for the jaw on the bolt. In using the tool the coupling jaw is slipped sidewise on the end of the bolt and the fulcrum bar placed against the face plate G, as shown in Fig. 2. Then by pressing the tool lever K inwardly the bolt D can be drawn outwardly out of engagement with the notch e in the locking pin E, when the pin can be lifted out of the hole in the bolt; A holding dog is preferably pivoted to the tool lever K. YVhen the bolt D has been drawn out, as explained, this dog can be thrown down against the face plate G, as shown in Fig. 3, to hold the bolt D out until the locking pin is removed. .The bolt D is similarly drawn out for inserting the locking pin to lock the door. A tool of different construction and having a different sort of engagement with the bolt for operating the lock could be used, but the outer end of the bolt D is of such shape that it cannot be operated by any tool or implement of ordinary construc tion as it has no parts affording a hold for such a tool.

A lock constructed as described is very safe and reliable. The locking pin E cannot be removed to release the hasp except by drawing the bolt D outwardly independ ently of the hasp and locking pin. If it is attempted to pry the lock open by an implement placed behind the hasp or the locking pin E, the latter will be forced into a still securer interlocked engagement with the bolt, thereby effectually preventing the removal of the pin. The lock nevertheless has the usual advantages incident to a hasp lock, and it is especially desirable for use on car doors, for the hasp is freely movable on its staple or fastening, and if the door should sag or from any cause get out of its intended position in the use of the car the hasp can notwithstanding be readily engaged with the bolt D and disengaged therefrom when released, whereas with a lock having a sliding bolt, if the bolt guide and keeper do not reg ister exactly, great difficulty is experienced in shooting the bolt. As, however, when the door is locked the hasp is held firmly by the locking pin, the door will be prevented from swinging outwardly in the event that it gets off of the door track.

The lock can be applied to cars of the ordinary construction without necessitating any changes in the cars.

lVe claim as our invention:

1. The combination with a movable and a stationary part, of a hasp fastened to one of said parts, and a bolt movably mounted on said other part and adapted to extend through an opening in the hasp, a locking pin which interlocks with the bolt in front of the hasp, and a spring which holds the bolt interlocked with the locking pin to secure the latter in place, substantially as set forth.

2. The combination with a door and door post, of a hasp fastened to the door and provided at its free end with a. bolt opening, a bolt movably mounted on the door post and adapted to extend through the opening in the hasp, a locking pin passing through a I hole in the bolt in front of the hasp and having a notch in its outer edge, and a spring which holds said bolt in said notch in the locking pin to secure the locking pin in place, substantially as set forth.

4. The combination with a door and door post, of a hasp fastened to the door and provided at its free end with a bolt opening, a bolt movable endwise in a hole in the door post and adapted to extend through the hasp opening, a locking pin passing through a hole in the bolt in front of the hasp, a face plate having a guide in which the locking pin is slidable endwise and confined laterally, and a spring acting on the inner end of the bolt which holds the bolt interlocked with the locking pin to hold the locking pin in place, substantially as set forth.

5. The combination with a door and door post, of a hasp fastened to the door and provided at its free end with a bolt opening, a bolt movable endwise in a hole in the door post and adapted to extend through the hasp opening, a locking pin passing through a hole in the bolt in front of the hasp, a face plate having a vertical guide in which the locking pin is slidable endwise and which has parts which engage said hasp and hold it from vertical play, and a spring acting on the inner end of the bolt which holds the bolt interlocked with the locking pin to hold the locking pin in place, substantially as set forth. 7

6. The combination with a movable and a stationary part, of a hasp fastened to one of said parts, and a bolt movably moimted on said other part and adapted to extend through an opening in the hasp, a locking pin which interlocks with the bolt in front of the hasp, and a spring which holds the bolt interlocked with the locking pin to secure the latter in place, the outer end of the bolt being fashioned for the engagement of a tool for moving the bolt against the action of said spring, substantially as set forth.

7. The combination with a movable and a stationary part, of a hasp fastened to one of said parts, and a bolt movably mounted on said other part and adapted to extend through an opening in the hasp, a locking pin which interlocks with the bolt in front of the hasp, a spring which holds the bolt interlocked wit-h the locking pin to secure the latter in place, and a tool for moving the bolt against the action of said spring, comprising a lover, a jaW pivoted to the lever and adapted to interlock with the bolt, and a fulcrum rod pivoted to the lever and adapted to bear on the part on Which the bolt is mounted, substantially as set forth.

8. The combination With a movable and a stationary part, of a hasp fastened to one of said parts, and a bolt movably mounted on said other part and adapted to extend through an opening in the hasp, a locking pin Which interlocks with the bolt in front of the hasp, a spring which holds the bolt interlocked With the locking pin to secure the latter in place, and a tool for moving the bolt against the action of said spring, comprising a lever, means for grasping the bolt, and a dog for holding the tool With the bolt in the released position, substantially as set forth.

Witness our hands, this 29th day of June,

PATRICK J. QUINN. GEORGE P. CLIFFORD. Witnesses C. B. HoRNBEoK, C. W. PARKER. 

